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https://issues.apache.org/jira/browse/LUCENE-5416?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13881480#comment-13881480
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Paul Elschot commented on LUCENE-5416:
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See this pull request for the code:
https://github.com/apache/lucene-solr/pull/22
There is also a remarks.txt there.
I did not clean the commits in the github repo, please look at the changes.
At the pull request I did not see the possibilty to download a patch, in case
one is preferred, please let me know.
> Performance of a FixedBitSet variant that uses Long.numberOfTrailingZeros()
> ---------------------------------------------------------------------------
>
> Key: LUCENE-5416
> URL: https://issues.apache.org/jira/browse/LUCENE-5416
> Project: Lucene - Core
> Issue Type: Bug
> Components: core/search
> Affects Versions: 5.0
> Reporter: Paul Elschot
> Priority: Minor
> Fix For: 5.0
>
>
> On my machine the current byte index used in OpenBitSetIterator is slower
> than Long.numberOfTrailingZeros() for advance().
> The pull request contains the code for benchmarking this taken from an early
> stage of DocBlocksIterator.
> In case the benchmark shows improvements on more machines, well, we know what
> to do...
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